I have two connections in the web.config basically they are calling the same database. I want to manage this in a better manner because change in one config also needs to change the second connection string as well.
<add name="DefaultConnection" connectionString="Data Source=.\SQLEXPRESS;persist security info=True;user id=test;password=test123;database=db-AUTH" providerName="System.Data.SqlClient" />
<add name="dbEntities" connectionString="metadata=res://*/InsuranceFinderModel.csdl|res://*/InsuranceFinderModel.ssdl|res://*/InsuranceFinderModel.msl;provider=System.Data.SqlClient;provider connection string="data source=.\SQLEXPRESS;initial catalog=db-AUTH;persist security info=True;user id=test;password=test123;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" />
My question is, is there any way i can call the connection string into the other connection string.
For example. default connection connection string into db entities something like
<add name="dbEntities" connectionString="metadata=res://*/InsuranceFinderModel.csdl|res://*/InsuranceFinderModel.ssdl|res://*/InsuranceFinderModel.msl;provider=System.Data.SqlClient;provider connection string= DefaultConnection" providerName="System.Data.EntityClient" />
Any suggestions would be appreciated thanks.
You are not obliged to use connection string defined inside app.config(web.config) file for entity connection. You can change entity connection string at runtime. Read this article for that: http://www.c-sharpcorner.com/UploadFile/dacca2/pass-connection-string-in-run-time-to-entity-framework/ .
Also you can get another connnection string and separete every part of connection string( DataBase,DataSource and etc.) using StringConnectionBuilder class https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnectionstringbuilder.initialcatalog.aspx.
The solution is: Get DefaultConnection string and change entity connection at runtime.
Related
I would like some explanations on how to create and set up a dynamic connection to SQL Server DB engine in a C # project
if you want connection string in config and read it than you need to do like this , put possible connectionstring in config
<connectionStrings>
<add name="CharityManagement"
connectionString="Data Source=.;Initial Catalog=CharityManagement;Integrated Security=True"/>
<add name="CharityManagement_two"
connectionString="Data Source=.;Initial Catalog=CharityManagement_two;Integrated Security=True"/>
</connectionStrings>
and than read it base on condition using configurationmanager class
//to read first connection string
var connectionString=ConfigurationManager.ConnectionStrings["CharityManagement"].ConnectionString;
//to read second connection string
var connectionString=ConfigurationManager.ConnectionStrings["CharityManagement_two"].ConnectionString;
This is what you're after
In the config file
<connectionStrings>
<add name="myConnectionString" connectionString="server=localhost;database=myDb;uid=myUser;password=myPass;" />
</connectionStrings>
Then to read the connection string in your code you will do
string connStr = ConfigurationManager.ConnectionStrings["myConnectionString"].ConnectionString;
Don't forget to use using System.Configuration;
Further reading here
I have an ArgumentException : Keyword not supported: 'metadata'.
I tried many things, read many posts. I dont know what to do...
This is my CS :
<add name="CDPContext"
connectionString="metadata=res://*/CDP_Model.csdl|
res://*/CDP_Model.ssdl|
res://*/CDP_Model.msl;
provider=System.Data.SqlClient
provider connection string='Data Source=(LocalDb)\v11.0;
AttachDbFilename=\CDP.mdf;
Initial Catalog=CDP;
Integrated Security=True;
MultipleActiveResultSets=True;
App=EntityFramework'"
providerName="System.Data.SqlClient" />
Thanks.
the connection string you provided above is for model first.
to use connection string for code first you could write your connection string as below
<add name="CDPContext" connectionString="Data Source=(LocalDb)\v11.0;
AttachDbFilename=\CDP.mdf;
Initial Catalog=CDP;integrated security=True;MultipleActiveResultSets=True;" providerName="System.Data.SqlClient" />
and also go to you context, if there is a throw exception in it, just remove it.
providerName="System.Data.SqlClient" is the wrong provider for DB First
instead use providerName="System.Data.EntityClient" to access the db using the EDM...
this is my connection string on godaddy hosting. By the way I have my database and membership database I makes security for some pages on my website.
All tables in one database Waves database. I used it to make login page for admin panel for my website but when I try to login and write pass & username it makes error that I write it above and this my connection string in web.config .also i have another 2 connection strings but it works OK, only this connection string is not working.
<connectionStrings>
<add name="ApplicationServices"
connectionString="data source=180.000.004.53\SQLEXPRESS;Integrated Security=false;AttachDBFilename=|DataDirectory|\aspnetdb.mdf;User Instance=true"
User ID=id;Password=Password;Encrypt=False;
providerName="System.Data.SqlClient" />
<add name="WavesEntities"
connectionString="metadata=res://*/App_Code.WaveModel.csdl|res://*/App_Code.WaveModel.ssdl|res://*/App_Code.WaveModel.msl;provider=System.Data.SqlClient;provider connection string="Data Source=004.00.004.03;User ID=id;Password=password;Encrypt=False;Connect Timeout=15;Initial Catalog=Waves;Integrated Security=false;MultipleActiveResultSets=True""
providerName="System.Data.EntityClient" />
<add name="WavesConnectionString"
connectionString="Data Source=000.100.10.0;User ID=id;Password=password;Encrypt=False;Connect Timeout=15;Initial Catalog=Waves;Integrated Security=false"
providerName="System.Data.SqlClient" />
</connectionStrings>
After a minor reformatting of your code, it seems pretty obvious that the first connection string is invalid, and may be causing your problem:
This part should presumably be placed within the quotes, and be part of the connection string:
User ID=id;Password=Password;Encrypt=False;
How to add host's name into connection string?
<connectionStrings>
<add name="Entities" connectionString="metadata=res://*/Mapping.WksModels.csdl|res://*/Mapping.WksModels.ssdl|res://*/Mapping.WksModels.msl;provider=Oracle.ManagedDataAccess.Client;provider connection string="data source=MyDb;password=test;persist security info=True;user id=test"" providerName="System.Data.EntityClient" />
</connectionStrings>
MyDb in Data source=MyDb should be the host name (not the db name)
Here's what worked for me:
string conn = "DATA SOURCE=YOURhostname.com:1521/DBNAME;USER ID=YOURUSERNAME;PASSWORD=YOURPASSWORD";
Do not add any additional spaces or quotes. Good luck.
i registered my website on somee.com. for that i have uploaded MS SQL database. i was wrting this connection string in my code:
connectionString="metadata=res://*/nrcsaEntities.csdl|res://*/nrcsaEntities.ssdl|res://*/nrcsaEntities.msl;provider=System.Data.SqlClient;provider connection string="data source=My-PC;initial catalog=nrcsa;integrated security=True;multipleactiveresultsets=True;App=EntityFramework""
now as i registered somee.com is providing me new connection string that is:
workstation id=nrcsadb.mssql.somee.com;packet size=4096;user id=DuaZoya_SQLLogin_1;pwd=abcd;data source=nrcsadb.mssql.somee.com;persist security info=False;initial catalog=nrcsadb
i have changed connectiong string in file web.config by replacing this first connection string with provided connection string by somee.com
PROBLEM:
This replacement is generating warning that:
System.ArgumentException: Keyword not supported: 'user id'.
how to solve this problem?
In the web.config file ....
<connectionStrings><add name="nameofConnection" connectionString="Data Source=servername; Initial Catalog=DatabaseName; User ID=UserName; Password=Password;"/> </connectionStrings>
<system.web>
<compilation debug="false" targetFramework="4.0" /> </system.web>
you can edit target Framework according to you.
from : http://dotnet-developers-cafe.blogspot.in/2013/08/create-connection-string-in-aspnet.html
You're using Entity Framework.
Entity Framework has its own connection string which contains a reference to the EF metadata (metadata=...) as well as the inner connection string to connect to the actual database.
You need to insert your actual database connection string inside the EF connection seting, in the provider connection string=... section.
You will also need to add multipleactiveresultsets=True to their connection string; EF needs that setting.
As you are using entity famework, then your connection string will look like
<connectionStrings>
<add name="BlogContext"
connectionString="metadata=res://*/BloggingModel.csdl|
res://*/BloggingModel.ssdl| res://*/BloggingModel.msl;
provider=System.Data.SqlClient
provider connection string="data source=[you somee.com connetion string];"" providerName="System.Data.EntityClient" />
</connectionStrings>
what you need to do is simply change the value of data source from the actual connectionstring provided by somee.com
Don't replace the whole connection string. You will need to remove the Integrated Security = true section and replace it with user=DuaZoya_SQLLogin_1;password=abcd.
Also change the data source to nrcsadb.mssql.somee.com.
You pretty much just need to replace values in your existing connection string with the values provided.